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/* strgutil.c - miscellaneous utilities
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
* GNUPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNUPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "types.h"
#include "util.h"
#include "memory.h"
void
free_strlist( STRLIST sl )
{
STRLIST sl2;
for(; sl; sl = sl2 ) {
sl2 = sl->next;
m_free(sl);
}
}
STRLIST
add_to_strlist( STRLIST *list, const char *string )
{
STRLIST sl;
sl = m_alloc( sizeof *sl + strlen(string));
strcpy(sl->d, string);
sl->next = *list;
*list = sl;
return sl;
}
STRLIST
append_to_strlist( STRLIST *list, const char *string )
{
STRLIST r, sl;
sl = m_alloc( sizeof *sl + strlen(string));
strcpy(sl->d, string);
sl->next = NULL;
if( !*list )
*list = sl;
else {
for( r = *list; r->next; r = r->next )
;
r->next = sl;
}
return sl;
}
STRLIST
strlist_prev( STRLIST head, STRLIST node )
{
STRLIST n;
for(n=NULL; head && head != node; head = head->next )
n = head;
return n;
}
STRLIST
strlist_last( STRLIST node )
{
if( node )
for( ; node->next ; node = node->next )
;
return node;
}
/****************
* look for the substring SUB in buffer and return a pointer to that
* substring in BUF or NULL if not found.
* Comparison is case-insensitive.
*/
const char *
memistr( const char *buf, size_t buflen, const char *sub )
{
const byte *t, *s ;
size_t n;
for( t=buf, n=buflen, s=sub ; n ; t++, n-- )
if( toupper(*t) == toupper(*s) ) {
for( buf=t++, buflen = n--, s++;
n && toupper(*t) == toupper(*s); t++, s++, n-- )
;
if( !*s )
return buf;
t = buf; n = buflen; s = sub ;
}
return NULL ;
}
/****************
* Wie strncpy(), aber es werden maximal n-1 zeichen kopiert und ein
* '\0' angeh�ngt. Ist n = 0, so geschieht nichts, ist Destination
* gleich NULL, so wird via m_alloc Speicher besorgt, ist dann nicht
* gen�gend Speicher vorhanden, so bricht die funktion ab.
*/
char *
mem2str( char *dest , const void *src , size_t n )
{
char *d;
const char *s;
if( n ) {
if( !dest )
dest = m_alloc( n ) ;
d = dest;
s = src ;
for(n--; n && *s; n-- )
*d++ = *s++;
*d = '\0' ;
}
return dest ;
}
/****************
* remove leading and trailing white spaces
*/
char *
trim_spaces( char *str )
{
char *string, *p, *mark;
string = str;
/* find first non space character */
for( p=string; *p && isspace( *(byte*)p ) ; p++ )
;
/* move characters */
for( (mark = NULL); (*string = *p); string++, p++ )
if( isspace( *(byte*)p ) ) {
if( !mark )
mark = string ;
}
else
mark = NULL ;
if( mark )
*mark = '\0' ; /* remove trailing spaces */
return str ;
}
int
string_count_chr( const char *string, int c )
{
int count;
for(count=0; *string; string++ )
if( *string == c )
count++;
return count;
}
/****************
* Convert string, which is in native encoding to UTF8 and return the
* new allocated UTF8 string.
* This code assumes that native is iso-8859-1.
*/
char *
native_to_utf8( const char *string )
{
const byte *s;
char *buffer;
byte *p;
size_t length=0;
for(s=string; *s; s++ ) {
length++;
if( *s & 0x80 )
length++;
}
buffer = m_alloc( length + 1 );
for(p=buffer, s=string; *s; s++ ) {
if( *s & 0x80 ) {
*p++ = 0xc0 | ((*s >> 6) & 3);
*p++ = 0x80 | ( *s & 0x3f );
}
else
*p++ = *s;
}
*p = 0;
return buffer;
}
/****************
* Convert string, which is in UTF8 to native encoding. Replace
* illegal encodings by some "\xnn".
* This code assumes that native is iso-8859-1.
*/
char *
utf8_to_native( const char *string )
{
/* FIXME: Not yet done */
return m_strdup(string);
}
/*********************************************
********** missing string functions *********
*********************************************/
#ifndef HAVE_STPCPY
char *
stpcpy(char *a,const char *b)
{
while( *b )
*a++ = *b++;
*a = 0;
return (char*)a;
}
#endif
#ifndef HAVE_STRLWR
char *
strlwr(char *s)
{
char *p;
for(p=s; *p; p++ )
*p = tolower(*p);
return s;
}
#endif
/****************
* mingw32/cpd has a memicmp()
*/
#ifndef HAVE_MEMICMP
int
memicmp( const char *a, const char *b, size_t n )
{
for( ; n; n--, a++, b++ )
if( *a != *b && toupper(*(const byte*)a) != toupper(*(const byte*)b) )
return *(const byte *)a - *(const byte*)b;
return 0;
}
#endif
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